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DIN 17100 Fatigue strength diagrams

Engineering Materials

Fatigue strength diagrams of general purpose structural steels, DIN 17100, test piece diameter d = 10 mm.

Tension/compression fatigue strength
Tension/compression fatigue strength


Bending Fatigue Strength
Bending Fatigue Strength


Torsional Fatigue Strength
Torsional Fatigue Strength


Case hardening steels not illustrated may be used as follows:
25 MoCr 4 like 20 MnCr 5
17 CrNiMo 6 like 18 CrNi 8

Loading type I: static
Loading type II: dynamic
Loading type III: alternating